Excretory System Flashcards
What is the excretory system
Regulates volume and composition of bodily fluids
What consists of the urinary structure
Kidneys
Ureters
Urinary bladder
Urethra
What consists of the kidney structure
Renal pelvis
Renal cortex
Renal medulla
What are the functions of the nephron
Urine is produced here
Filter substances out of blood and turns it to urine
What is the path of the nephron
- Filter (bowman’s capsule)
- Tubule
- Collecting Duct
How is urine formed?
Glomerular filtration
Tubule reabsorbtion
Tubular secretion
Water reabsorption
What is the collecting duct
Passes through the salty medulla and moves urine to the renal pelvis and ureters
What is tubular secretion
Controls blood ph
Transports unwanted substances/wastes
What is water balance in blood
Kidneys help maintain it
What is hypothalamus
Structure in the brain that contains specialized cells that monitor osmotic pressure
What are some ADH Problems
Diabetes insipidous,
Ethanol (drinking alcohol)
What is some treatment for excretory health
Dialysis - diffusion of substances through a semi permeable membrane
What are the 3 sections of the reabsorption tubule
Proximal tubule
Loop of Henle
Distal tubule
What are two important factors for kidney filtration
Capillaries in glomerulus are extra permeable
Blood pressure is 4 times higher than other capillary beds
What percent of filtrate passed through the proximal tubule is returned to the body
65%
